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Commentary : Contributing to the SpaceWire international standard (H. HIHARA et al.)−153−Synthesiology - English edition Vol.11 No.3 (2018) and listening to specialists with various backgrounds led to innovation, cost reduction, downsizing, and weight reduction, and as a result, linked to the “precedents of Europe and USA.” That is, there is a need for a platform to be prepared to gather skills and knowledge of the participants who have diverse backgrounds toward a common goal. The issue was to prepare such a platform in Japan.5 SummaryIn this article, we reviewed the process by which the Japanese proposals were reflected in the SpaceWire international standard, and the success factors were considered referring to the conceptual model for continuous evolution of the subject described in Reference [8]. In looking back, we were able to reconrm that the Japanese proprietary technologies were valid internationally, and the Japanese behavior pattern of respecting the preceding technology while conducting “kaizen” was effective in incorporating (the word “rub in” perhaps better describes the situation) the proprietary technology into international standards. As a result, we believe we were able to describe the empirical knowledge for reecting the Japanese proposal in an international standard utilizing the European de jure standard establishment process as a reproducible model. By being aware of this model, we hope the activities for getting the Japanese proposals reected in international standards will be activated.6 AcknowledgementFor the practical realization of SpaceWire, we are grateful to Dr. Takayuki Yuasa (Spire Global, Inc.) who was deeply involved in the development of the SpaceWire network for ASTRO-H at ISAS. We thank Shimafuji Electric Inc. that developed test equipment that swiftly incorporated the SpaceWire international standard specs and contributed to its practical realization. The discussions in this article were inspired by the lectures on advanced regulatory science by Professor Yasunori Baba, the Research Center for Advanced Science and Technology, The University of Tokyo. He provided us with a hint that it might be possible to construct a reproducible model. We are thankful to Professor Baba who made us aware that it is possible to link the success stories of standardization activity, which tend to end up as stories of personal experiences, to practical application.Note 1) All onboard units have redundant systems.Note 2) It is not the normal condition that is set in the specications.References[1]H. Hihara, K. Iwase, J. Sano, H. Otake, T. Okada, R. Funase,R.Kashikawa, I. Higashino and T. Masuda: SpaceWire-based thermal-infrared imager system for asteroid samplereturn mission HAYABUSA2, J. Appl. Remote Sens., 8 (1),084987 (2014).[2]T. Takahashi, K. Mitsuda, R. Kelley, F. Aharonian, F.Akimoto, S. Allen, N. Anabuki, L. Angelini, K. Arnaud,H.Awaki, A. Bamba, N. Bando, M. Bautz, R. Blandford,K.Boyce, G. Brown, M. Chernyakova, P. Coppi, E.Costantini, J. Cottam, J. Crow, J. de Plaa, C. de Vries, J. W.den Herder, M. Dipirro, C. Done, T. Dotani, K. Ebisawa,T.Enoto, Y. Ezoe, A. Fabian, R. Fujimoto, Y. Fukazawa, S.Funk, A. Furuzawa, M. Galeazzi, P. Gandhi, K. Gendreau,K.Gilmore, Y. Haba, K. Hamaguchi, I. Hatsukade, K.Hayashida, J. Hiraga, K. Hirose, A. Hornschemeier, J.Hughes, U. Hwang, R. Iizuka, K. Ishibashi, M. Ishida, K.Ishimura, Y. Ishisaki, N. Isobe, M. Ito, N. Iwata, J. Kaastra,T.Kallman, T. Kamae, H. Katagiri, J. Kataoka, S. Katsuda,M.Kawaharada, N. Kawai, S. Kawasaki, D. Khangaluyan,C.Kilbourne, K. Kinugasa, S. Kitamoto, T. Kitayama, T.Kohmura, M. Kokubun, T. Kosaka, T. Kotani, K. Koyama,A.Kubota, H. Kunieda, P. Laurent, F. Lebrun, O. Limousin,M.Loewenstein, K. Long, G. Madejski, Y. Maeda, K.Makishima, M. Markevitch, H. Matsumoto, K. Matsushita,D.McCammon, J. Miller, S. Mineshige, K. Minesugi, T.Miyazawa, T. Mizuno, K. Mori, H. Mori, K. Mukai, H.Murakami, T. Murakami, R. Mushotzky, Y. Nakagawa, T.Nakagawa, H. Nakajima, T. Nakamori, K. Nakazawa, Y.Namba, M. Nomachi, S. O’Dell, H. Ogawa, M. Ogawa, K.Ogi, T. Ohashi, M. Ohno, M. Ohta, T. Okajima, N. Ota, M.Ozaki, F. Paerels, S. Paltani, A. Parmar, R. Petre, M. Pohl,S.Porter, B. Ramsey, C. Reynolds, S. Sakai, R. Sambruna,G.Sato, Y. Sato, P. Serlemitsos, M. Shida, T. Shimada, K.Shinozaki, P. Shirron, R. Smith, G. Sneiderman, Y. Soong,L.Stawarz, H. Sugita, A. Szymkowiak, H. Tajima, H.Takahashi, Y. Takei, T. Tamagawa, T. Tamura, K. Tamura,T.Tanaka, Y. Tanaka, Y. Tanaka, M. Tashiro, Y. Tawara, Y.Terada, Y. Terashima, F. Tombesi, H. Tomida, M. Tozuka,Y.Tsuboi, M. Tsujimoto, H. Tsunemi, T. Tsuru, H. Uchida,Y.Uchiyama, H. Uchiyama, Y. Ueda, S. Uno, M. Urry,S.Watanabe, N. White, T. Yamada, H. Yamaguchi, K.Yamaoka, N. Yamasaki, M. Yamauchi, S. Yamauchi, Y.Yatsu, D. Yonetoku and A. Yoshida: The ASTRO-H mission,Proc. SPIE, 7732, 77320Z-77320Z-18 (2010).[3]S. Watanabe, H. Tajima, Y. Fukazawa, R. Blandford, T.Enoto, J. Kataoka, M. Kawaharada, M. Kokubun, P. Laurent,F.Lebrun, O. Limousin, G. Madejski, K. Makishima, T.Mizuno, T. Nakamori, T. Nakazawa, K. Mori, H. Odaka, M.Ohno, M. Ohta, G. Sato, R. Sato, S. Takeda, H. Takahashi, T.Takahashi, T. Tanaka, M. Tashiro, Y. Terada, H. Uchiyama,Y.Uchiyama, S. Yamada, Y. Yatsu, D. Yonetoku and T.Yuasa: Soft gamma-ray detector for the ASTRO-H mission,Proc. SPIE, Astronomical Telescopes + Instrumentation2012, 8443, 844326 (2012).[4]T. Takahashi, K. Mitsuda, R. Kelley, F. Aharonian, H.Akamatsu, F. Akimoto, S. Allen, N. Anabuki, L. Angelini,K.Arnaud, M. Asai, M. Audard, H. Awaki, P. Azzarello,C.Baluta, A. Bamba, N. Bando, M. Bautz, T. 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